There are so many paths to miss the rings... This one is a bit easier than with Sonic because you just have to fly to the hidden monitors in the tower instead of double jumping.
258
15/26
10-21-14
This is just to update my comment. I have a video. I got 259 rings
259
1/26
10-21-14
Many rings are hidden and easy to miss. Be sure you took every path. http://www.youtube.com/watch?v=3o3NhCgz14Q